A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5895-00-240-9938
NSN 5915-00-932-5324
NSN 5990-00-573-6067
NSN 6130-00-236-5085
NSN 6150-01-423-8830
NSN 6610-01-032-5335
NSN 5999-01-121-7139
NSN 4140-01-246-4267
NSN 6610-01-459-8690
NSN 6645-01-621-5424
NSN 5985-00-864-6707
NSN 6220-01-360-2532